Fig 5. Schematic of photobleached patterns at the tissue- and lamella-level.

(A) Photobleached square pattern (blue) showing the line segments (L₁, L₂, L₃, and L₄) used to quantify tissue-level elongations. (B) Photobleached grid pattern showing line segments used to quantify lamellar elongation ($l_k^{\Vert }$) and lamellar width changes ($l_k^{\perp }$), and shear angles (${\gamma }_k^l$) used to quantify interlamellar deformations at the lamella-level.